No Gen 7 abilities are present
No Gen 7 moves are present
No Gen 7 Pokemon are present, but can have special references.
No Gen 6 Pokemon are present and this means no legendary or starter Pokemon signature abilities are present. Pokemon Mind X Matter replaces X and Y as the 6th Generation and introduces the fairy type like they did.
Not in the same universe as mega evolution. No mega stones can be found.
The only buff to be kept from 7th gen is the increase in power of leech life. Keep that in mind when inputting power.
The only nerf to be kept from 7th gen is Destiny Bond failing in succession. Keep this in mind.
Freeze hax only last a maximum of 5 turns.
Sleep clause is always in effect.